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Selecting a class

Objective

To choose the class containing the specific properties of the resource you want to monitor.

Background information

The class list shows the available classes. When you select a class, all properties corresponding to the selected class are listed in the Class Properties table.

The CIM repository of WMI stores the available CIM classes. WMI providers provide class instances. If the resource you want to monitor is not described by any class in the CIM repository, you can add a new class.

For example, if you are creating a resource model to use on a UNIX-based operating system, you need to add the specific CIM class to the CIM repository of WMI. You do not need a WMI data provider for this class. It exists in the CIM repository solely to be available when you work with the IBM Tivoli Monitoring Resource Model Builder.

To add a new class to the CIM repository, you must write a Managed Object Format (MOF) text file that defines the class and the provider. For Windows systems, you can use either a native WMI provider or a Java provider. For non-Windows systems, you must use a Java provider.

To run the resource model on an endpoint, you must transfer the MOF file and the provider (DLL file for a WMI provider, or a Jar for a Java provider) to the endpoint. Do this by adding a dependency to the resource model.

If you run a collection test at this point, the resource model collects data about all the properties of the selected class. However, if you are using a CIM class that does not have either a WMI provider or Java provider for Windows available through WMI, you cannot perform a collection test.

Before you begin

Specify the scripting language in which the resource model is to be written and the operating systems on which it will run.

When you finish

Create a list of properties to monitor that are relevant to the class you selected. See Selecting properties.

Procedure

  1. Select a class to display the associated class properties in the table on the left.

    Additional Information: You can also perform the following operations in this window:

  2. (Optional) Click Collection Test to retrieve all instances of a selected class from CIM/WMI.

    Additional Information: As you progress through the pages, you can use the collection test button to show the inclusion of selected properties, while removing undesired properties.

  3. (Optional) Click Show Description to display information about the properties of the selected class that was included by the CIM class provider.
  4. (Optional) Click MOF Compiler to launch the MOF compiler wizard. Use this wizard to import MOF files into the WMI repository.
  5. Click Next to proceed with the wizard.

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